SAFE_STRING        37 ext/mssql/php_mssql.c #define SAFE_STRING(s) ((s)?(s):"")
SAFE_STRING        80 ext/mysql/php_mysql.c #define SAFE_STRING(s) ((s)?(s):"")
SAFE_STRING       160 ext/readline/readline.c #define SAFE_STRING(s) ((s)?(char*)(s):"")